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KAPPA AND LAMBDA FREE LIGHT CHAINS (BENCE JONES PROTEIN), QUANTITATIVE, URINE

Mnemonic

U BJ QNT

Guidelines

Aids in the diagnosis and management of multiple myeloma and related disorders. Preferred test to detect and quantify urinary free light chains (Bence Jones protein).

Specimen Collection Requirements

Collect

24-hour urine. Refrigerate during collection. Also acceptable: Random urine specimens and urine supernate.

Handling

Transfer two 4.0 mL aliquots from a well-mixed 24-hour collection to individual aliquot tubes (Min: 3.0 mL). Record total volume and collection time interval on transport tube and test request form.

Preferred Volume

8.0 mL

Minimum Volume

3.0 mL

Transport

Refrigerated

Stability

Ambient: 2 hours; Refrigerated: 1 week; Frozen: Unacceptable

Testing Information

Performed

Mon-Fri

Reported

2-7 days

Method

Qualitative Immunofixation Electrophoresis/Quantitative Nephelometry

Referral Lab

ARUP (50618)

Reference Values

Reference Values

Interpretation provided.

CPT Codes

84156;86335;83883 x2

Last Updated: Thursday, January 5, 2017 03:41:35 AM


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